A teacher at MacArthur High School has been placed on administrative leave following allegations that he had inappropriate relationships with students there.

A former president of MacArthur's electrical booster club made the allegations Monday, telling officials she had been having an ongoing relationship with the male teacher and accusing him of also having relationships with senior girls, a North East Independent School District spokeswoman said.

The teacher, placed on leave Tuesday, denied all the allegations, the spokeswoman, Aubrey Chancellor, said.

She did not identify the teacher but said he has been a MacArthur employee for “at least eight years.”

“We take allegations like this very seriously. We immediately placed the teacher on leave while we conduct a thorough investigation,” Chancellor said.